1.
Hoffman, B.: Inside terrorism. Columbia University Press, New York (2017).
2.
Cronin, A.K.: How terrorism ends: understanding the decline and demise of terrorist campaigns. Princeton University Press, Princeton, N.J.
3.
Hart, P. ’t, Boin, A., Stern, E., Sundelius, B.: How to deal with crisis: lessons for prudent leadership. In: The Politics of crisis management: public leadership under pressure. pp. 137–157. Cambridge University Press, Cambridge (2005).
4.
Jason Burke: Al-quaeda and the origins of ISIS. In: The new threat : from Islamic militancy. pp. 56–79. Bodley Head, London (2015).
5.
Bjørgo, T.: Root Causes of Terrorism: Myths, Reality and Ways Forward. Presented at the (2005).
6.
David Kilcullen: Internationale. In: Blood year: Islamic State and the failures of the war on terror. pp. 111–125. Hurst, London (2016).
7.
Rapoport, D.C.: Sacred terror : a contemporary example from Islam. In: Reich, W. (ed.) Origins of terrorism : psychologies, ideologies, theologies, states of mind. pp. 103–130. Woodrow Wilson International Center for Scholars, Cambridge (1990).
8.
Nesser, P.: Islamist terrorism in Europe. Presented at the (2018).
9.
Neumann, P.: Foreign fighters. In: Radicalized: new jihadists and the threat to the west. pp. 85–109. I.B. Tauris, London (2016).
10.
Rapport, D.C.: The four waves of modern terrorism. In: Terrorism studies: a reader. pp. 41–60. Routledge, London (2012).
11.
Richardson, L.: The three R’s: revenge, renown and reaction. In: What terrorists want: understanding the enemy, containing the threat. pp. 71–103. Random HouseTrade Paperbacks, New York (2007).
12.
Sageman, M.: Leaderless Jihad : Terror Networks in the Twenty-First Century. Presented at the (20080101).
13.
Max Abrahms: Why Terrorism Does Not Work. International Security. 31, 42–78 (2006).
14.
Jensen, R.B.: The Pre-1914 Anarchist "Lone Wolf” Terrorist and Governmental Responses. Terrorism and Political Violence. 26, 86–94 (2014).
15.
David, Steven R: Israel’s policy of targeted killing. Ethics & International Affairs. 17, (2003).
16.
Thomas Hegghammer: The Rise of Muslim Foreign Fighters: Islam and the Globalization of Jihad. International Security. 35, 53–94 (2010).
17.
Parker, T., Sitter, N.: The Four Horsemen of Terrorism: It’s Not Waves, It’s Strains. Terrorism and Political Violence. 28, 197–216 (2016). https://doi.org/10.1080/09546553.2015.1112277.
18.
Sitter, N., Parker, T.: Fighting Fire with Water: NGOs and Counterterrorism Policy Tools. Global Policy. 5, 159–168 (2014).
19.
Parker, T.: Avoiding the terrorist trap: why respect for human rights is the key to defeating terrorism. World Scientific, New Jersey (2018).
20.
Weinberg, L.: The end of terrorism? Routledge, London (2012).
21.
English, R.: Terrorism: how to respond. Oxford University Press, Oxford (2009).
